Business Details
50+ Years
experience
Trusted HVAC Solutions for Multi-Family & Commercial Projects
LDI Mechanical is a family-owned business established in 1963, originally known as Lindy Dennis Industries. Acquired by Lloyd Smith in 1983, we have grown from a small operation in Conroe, Texas, to one of the largest mechanical contracting firms on the West Coast. Our expertise spans multi-family, commercial, and sheet metal fabrication projects, supported by a dedicated team of over 575 employees. We operate a 90,000-square-foot fabrication facility in Corona, California, utilizing advanced technologies like AutoCAD, Revit, and BIM to ensure precision and efficiency. Our leadership team, including owners Lloyd, Robert, and Mike Smith, brings decades of hands-on industry experience to every project.Safety remains our top priority, with a comprehensive program designed to protect employees and maintain high standards. Over 25% of our workforce has been with us for more than a decade, reflecting our commitment to employee growth and satisfaction. We pride ourselves on delivering quality HVAC systems on time and within budget, serving clients from Colorado to California. With a legacy of innovation and reliability, we continue to set benchmarks for excellence in the mechanical contracting industry.
Services
Engineering Design
Pre-Fabrication
Installation
Multi-Family
Commercial
Sheet Metal
Details
- Year established: 1963
Highlights and features
- 60+ years of family-owned expertise in HVAC systems
- In-house engineering team with AutoCAD, Revit, and BIM capabilities
- 90,000 sq ft UL-certified fabrication facility in California
- Comprehensive safety program with strict compliance standards
- 25% of employees have 10+ years tenure with the company
What people say
Quality product on time
Save time, money
Commitment to quality
Professional organization
Unmatched expertise
Services
HVAC Installation
Our HVAC installation services combine technical expertise with meticulous project management. With over 60 years of experience, we ensure proper system sizing, code compliance, and energy efficiency for residential and commercial properties. Our trained technicians complete installations on schedule while maintaining quality standards.
Engineering Design
We provide comprehensive HVAC design solutions using AutoCAD, Revit, and BIM technologies. Our engineers ensure compliance with building codes and Title-24 requirements while optimizing system performance. This approach minimizes field conflicts and reduces project costs through precise planning.
Pre-Fabrication
Our 90,000 sq ft California facility produces HVAC components meeting Underwriter Laboratory standards. The pre-fabrication process reduces on-site labor time while maintaining quality control. This approach allows rapid production of custom components for multi-family and commercial projects.
Sheet Metal Fabrication
We manufacture standard and custom sheet metal components for building envelopes and HVAC systems. Our Northern California division produces flashing and structural elements meeting strict durability requirements. This specialized service supports both our internal projects and external clients.
Commercial HVAC
Our commercial division handles complex HVAC requirements for large-scale projects. From garage exhaust systems to generator piping, we deliver tailored solutions for office buildings, retail spaces, and industrial facilities. With dedicated project managers, we ensure system efficiency and code compliance.
People
Lloyd Smith
Owner & Chairman
Founder with over 35 years of leadership experience in mechanical contracting. Started as a journeyman installer and built the company into a $100M+ enterprise. Provides strategic direction while maintaining operational oversight.
Robert Smith
President & CEO
Executive leader responsible for overall company operations. Brings extensive industry knowledge from hands-on experience in design, fabrication, and installation. Focuses on market expansion and client relationship management.
Mike Smith
Chief Operating Officer
Manages day-to-day operations with 30+ years of mechanical contracting experience. Oversees project execution across multiple divisions while maintaining quality control standards for all installations.
Todd Moser
Chief Financial Officer
Financial strategist with responsibility for budgeting, forecasting, and financial reporting. Ensures fiscal health while supporting growth initiatives across the company's expanding operations.
Carlos Trujillo
Vice President of Operations
Operations executive managing field activities across multiple regions. Coordinates between engineering, fabrication, and installation teams to maintain project timelines and quality standards.
Questions
What HVAC services does LDI Mechanical offer?
We provide full-service HVAC solutions including system design, fabrication, installation, and maintenance for multi-family, commercial, and industrial clients.
Which areas do you serve?
We operate across the western United States with offices in California, Colorado, and Nevada, serving both residential and commercial clients.
Do you offer emergency HVAC services?
While we don't provide 24/7 emergency services, we prioritize urgent requests during regular business hours and maintain service teams for critical needs.
How experienced is your team?
With over 60 years in business and 25% of employees having 10+ years tenure, our team combines deep industry knowledge with long-term operational experience.
What safety measures do you implement?
We maintain a comprehensive safety program requiring employees to report unsafe conditions and prohibiting unsafe work practices to protect all workers.
Can you handle large-scale projects?
Yes, our 90,000 sq ft fabrication facility and 575+ employees enable us to manage complex, large-scale HVAC projects for multi-family and commercial clients.
